package com.king.common.exception;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import com.king.common.constant.HttpStatus;
import com.king.common.utils.text.StringUtils;
import com.king.framework.base.domain.vo.AjaxResult;

/**
 * 全局异常处理器
 * 
 * @author king
 */
@RestControllerAdvice
public class GlobalExceptionHandler {
	private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

	/**
	 * 权限校验异常
	 */
	@ExceptionHandler(AccessDeniedException.class)
	public AjaxResult handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
		return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
	}

	/**
	 * 请求方式不支持
	 */
	@ExceptionHandler(HttpRequestMethodNotSupportedException.class)
	public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
			HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 业务异常
	 */
	@ExceptionHandler(ServiceException.class)
	public AjaxResult handleServiceException(ServiceException e, HttpServletRequest request) {
		log.error(e.getMessage(), e);
		Integer code = e.getCode();
		return StringUtils.isNotNull(code) ? AjaxResult.error(code, e.getMessage()) : AjaxResult.error(e.getMessage());
	}

	/**
	 * 拦截未知的运行时异常
	 */
	@ExceptionHandler(RuntimeException.class)
	public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',发生未知异常.", requestURI, e);
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 系统异常
	 */
	@ExceptionHandler(Exception.class)
	public AjaxResult handleException(Exception e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',发生系统异常.", requestURI, e);
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 自定义验证异常
	 */
	@ExceptionHandler(BindException.class)
	public AjaxResult handleBindException(BindException e) {
		log.error(e.getMessage(), e);
		String message = e.getAllErrors().get(0).getDefaultMessage();
		return AjaxResult.error(message);
	}

	/**
	 * 自定义验证异常
	 */
	@ExceptionHandler(MethodArgumentNotValidException.class)
	public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
		log.error(e.getMessage(), e);
		String message = e.getBindingResult().getFieldError().getDefaultMessage();
		return AjaxResult.error(message);
	}

	

	/**
	 * 拦截参数过长
	 * @param e
	 * @param request
	 * @param response
	 * @return
	 */
	@ExceptionHandler(DataIntegrityViolationException.class)
	public Object handleDataIntegrityViolationException(DataIntegrityViolationException e, HttpServletRequest request, HttpServletResponse response) {
		// 打印异常
		e.printStackTrace();
		return AjaxResult.error("参数内容过长或违反约束");
	}
}
